Synergistic Effects of Soil-Based Irrigation and Manure Substitution for Partial Chemical Fertilizer on Potato Productivity and Profitability in Semiarid Northern China
文献类型： 外文期刊
作者： Jiang, Lingling 1 ; Jiang, Rong 2 ; He, Ping 3 ; Xu, Xinpeng 3 ; Huang, Shaohui 4 ; Xie, Hanyou 3 ; Wang, Xiya 3 ; Wu, Qiying 3 ; Zhang, Xia 1 ; Yang, Yi 1 ;
作者机构： 1.Dezhou Univ, Inst Biophys, Shandong Key Lab Biophys, Dezhou 253023, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr & Resources, Beijing 100097, Peoples R China
3.Chinese Acad Agr Sci CAAS, Inst Agr Resources & Reg Planning, Minist Agr & Rural Affairs, Key Lab Plant Nutr & Fertilizer, Beijing 100081, Peoples R China
4.Hebei Acad Agr & Forestry Sci, Inst Agr Resources & Environm, Hebei Fertilizer Technol Innovat Ctr, Shijiazhuang 050051, Peoples R China
关键词： potato; irrigation water; manure substitution; comprehensive evaluation
期刊名称：PLANTS-BASEL （ 影响因子：4.0； 五年影响因子：4.4 ）
ISSN： 2223-7747
年卷期： 2024 年 13 卷 12 期
页码：
收录情况： SCI
摘要： Soil-based irrigation and the partial substitution of chemical fertilizers with manure are promising practices to improve water and nitrogen (N) use efficiency. We hypothesize that their combination would simultaneously benefit potato production, tuber quality and profitability. A two-year experiment was conducted in semiarid northern China to investigate the combined effects of three water treatments [rainfed (W0), soil-based irrigation (W1), conventional irrigation (W2)] and three N treatments [no N (N0), chemical N (N1), 25% manure substitution (N2)] on these indicators, and to perform a comprehensive evaluation and correlation analysis. The results showed that water and N treatments separately affected all indicators except vitamin C content. Compared to W2, W1 significantly increased water productivity by 12% and irrigation water use efficiency (IWUE) by 30% due to 10% lower evapotranspiration and 21% lower water use. However, W1 and W2 negatively affected crude protein content. Conversely, this was compensated by the combination with N1 and N2. There were slight differences between N1 and N2 for all indicators on average across water treatments, while under W1, N2 significantly increased leaf area index (LAI) and N recovery efficiency (REN) by 18% and 29.4%, respectively, over N1. Also, comprehensive evaluations showed that W1N2 performed best, with the highest tuber yield, profit and acceptable quality. This can be explained by the increase in LAI, IWUE and REN due to the positive correlations with tuber yield and net return. Consequently, soil-based irrigation combined with 25% manure substitution had complementary effects on tuber quality and synergistic effects on potato productivity and profitability.
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